Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA's HS3 Mission Covers Transition of Hurricane Cristobal

17.09.2014

NASA's Global Hawk 872 aircraft flew over Hurricane Cristobal on August 28 and 29 and gathered data on the storm as it was becoming extra-tropical.

NASA's airborne Hurricane and Severe Storm Sentinel, or HS3, mission kicked off on August 26 when one of the remotely piloted Global Hawk aircraft flew a "lawnmower" or back and forth pattern over Hurricane Cristobal while gathering data using dropsondes and two other instruments. The Global Hawk dropped 81 dropsondes over Cristobal.  A dropsonde is a device that measures winds, temperature, pressure and humidity as it falls from the aircraft to the surface.


On Friday, August 26, NASA's Global Hawk #872 took its second science flight over Hurricane Cristobal in the Atlantic Ocean on August 26, 2014. The lawnmower flight pattern (red) is depicted over this GOES-East satellite image. Image Credit: NASA

The Global Hawk flew a second mission over Cristobal over August 28 and 29 and dropped sondes over the storm when it was becoming extra-tropical.

A conversion to an "extra tropical" storm means that the tropical low pressure system eventually loses its warm core and becomes a cold-core system. During the time it is becoming extra-tropical the cyclone's primary energy source changes from the release of latent heat from condensation (from thunderstorms near the storm's center) to baroclinic (temperature and air pressure) processes.

When a cyclone becomes extra-tropical it will usually connect with nearby fronts and or troughs (extended areas of low pressure) consistent with a baroclinic (pressure) system. When that happens it appears the system grows larger while the core weakens.

During the August 28-29 Global Hawk overflights, the dropsonde data showed maximum low-level winds of 85-90 knots (97.8 to 103.6 mph/157.4 to 166.7 kph) just east and northwest of the center of circulation (near 49 degrees west longitude and 43.5 north latitude). These strong winds were located 150-300 km from the storm center, suggesting a shift of the strongest winds outward from the center compared to earlier stages in Cristobal’s lifecycle.

Dropsonde data also revealed that very dry air was rapidly moving eastward across the western and southern sides of the storm as it was making its transition.

The Cloud Physics Lidar, or CPL, instrument that also flew aboard the Global Hawk detected only shallow clouds across the western and southern portions of the storm, but saw clouds quickly build up to near 10 kilometers (6.2 miles) on the eastern side.

The HS3 mission is funded by NASA Headquarters and overseen by NASA's Earth System Science Pathfinder Program at NASA's Langley Research Center in Hampton, Virginia. It is one of five large airborne campaigns operating under the Earth Venture program.

The HS3 mission also involves collaborations with partners including the National Centers for Environmental PredictionNaval Postgraduate SchoolNaval Research LaboratoryNOAA's Unmanned Aircraft System Program, Hurricane Research Division and Earth System Research LaboratoryNorthrop Grumman Space TechnologyNational Center for Atmospheric ResearchState University of New York at AlbanyUniversity of Maryland - Baltimore CountyUniversity of Wisconsin, and University of Utah. The HS3 mission is managed by the Earth Science Project Office at NASA Ames Research Center, Moffett Field, California.

For more information about NASA's HS3 mission, visit:  

http://www.nasa.gov/hs3

For more information about an HS3 dropsonde, visit:  

http://www.nasa.gov/content/goddard/what-the-heck-is-a-dropsonde/#

Rob Gutro

NASA's Goddard Space Flight Center

Rob Gutro | Eurek Alert!
Further information:
http://www.nasa.gov/content/goddard/nasas-hs3-mission-covers-transition-of-hurricane-cristobal/

More articles from Earth Sciences:

nachricht Seismic study reveals huge amount of water dragged into Earth's interior
18.12.2018 | National Science Foundation

nachricht A damming trend
17.12.2018 | Michigan State University

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Data storage using individual molecules

Researchers from the University of Basel have reported a new method that allows the physical state of just a few atoms or molecules within a network to be controlled. It is based on the spontaneous self-organization of molecules into extensive networks with pores about one nanometer in size. In the journal ‘small’, the physicists reported on their investigations, which could be of particular importance for the development of new storage devices.

Around the world, researchers are attempting to shrink data storage devices to achieve as large a storage capacity in as small a space as possible. In almost...

Im Focus: Data use draining your battery? Tiny device to speed up memory while also saving power

The more objects we make "smart," from watches to entire buildings, the greater the need for these devices to store and retrieve massive amounts of data quickly without consuming too much power.

Millions of new memory cells could be part of a computer chip and provide that speed and energy savings, thanks to the discovery of a previously unobserved...

Im Focus: An energy-efficient way to stay warm: Sew high-tech heating patches to your clothes

Personal patches could reduce energy waste in buildings, Rutgers-led study says

What if, instead of turning up the thermostat, you could warm up with high-tech, flexible patches sewn into your clothes - while significantly reducing your...

Im Focus: Lethal combination: Drug cocktail turns off the juice to cancer cells

A widely used diabetes medication combined with an antihypertensive drug specifically inhibits tumor growth – this was discovered by researchers from the University of Basel’s Biozentrum two years ago. In a follow-up study, recently published in “Cell Reports”, the scientists report that this drug cocktail induces cancer cell death by switching off their energy supply.

The widely used anti-diabetes drug metformin not only reduces blood sugar but also has an anti-cancer effect. However, the metformin dose commonly used in the...

Im Focus: New Foldable Drone Flies through Narrow Holes in Rescue Missions

A research team from the University of Zurich has developed a new drone that can retract its propeller arms in flight and make itself small to fit through narrow gaps and holes. This is particularly useful when searching for victims of natural disasters.

Inspecting a damaged building after an earthquake or during a fire is exactly the kind of job that human rescuers would like drones to do for them. A flying...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

ICTM Conference 2019: Digitization emerges as an engineering trend for turbomachinery construction

12.12.2018 | Event News

New Plastics Economy Investor Forum - Meeting Point for Innovations

10.12.2018 | Event News

EGU 2019 meeting: Media registration now open

06.12.2018 | Event News

 
Latest News

Pressure tuned magnetism paves the way for novel electronic devices

18.12.2018 | Materials Sciences

New type of low-energy nanolaser that shines in all directions

18.12.2018 | Physics and Astronomy

NASA research reveals Saturn is losing its rings at 'worst-case-scenario' rate

18.12.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>